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| author | Peter Maydell <peter.maydell@linaro.org> | 2018-01-22 13:20:14 +0000 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2018-01-23 10:08:05 +0000 |
| commit | ee86981bda9ecd40c8daf81b7307b1d2aff68174 (patch) | |
| tree | e4a3a109a9c40705cdc42035aa8db9c64a9e005c /docs/devel | |
| parent | ee264eb32c14f076c964fc34ee66f6f95cce2080 (diff) | |
migration: Revert postcopy-blocktime commit set
This reverts commits
ca6011c migration: add postcopy total blocktime into query-migrate
5f32dc8 migration: add blocktime calculation into migration-test
2f7dae9 migration: postcopy_blocktime documentation
3be98be migration: calculate vCPU blocktime on dst side
01a87f0 migration: add postcopy blocktime ctx into MigrationIncomingState
31bf06a migration: introduce postcopy-blocktime capability
as they don't build on ppc32 due to trying to do atomic accesses
on types that are larger than the host pointer type.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'docs/devel')
| -rw-r--r-- | docs/devel/migration.rst | 14 |
1 files changed, 0 insertions, 14 deletions
diff --git a/docs/devel/migration.rst b/docs/devel/migration.rst index 015a9ebdf7..bf97080dac 100644 --- a/docs/devel/migration.rst +++ b/docs/devel/migration.rst @@ -401,20 +401,6 @@ will now cause the transition from precopy to postcopy. It can be issued immediately after migration is started or any time later on. Issuing it after the end of a migration is harmless. -Blocktime is a postcopy live migration metric, intended to show how -long the vCPU was in state of interruptable sleep due to pagefault. -That metric is calculated both for all vCPUs as overlapped value, and -separately for each vCPU. These values are calculated on destination -side. To enable postcopy blocktime calculation, enter following -command on destination monitor: - -``migrate_set_capability postcopy-blocktime on`` - -Postcopy blocktime can be retrieved by query-migrate qmp command. -postcopy-blocktime value of qmp command will show overlapped blocking -time for all vCPU, postcopy-vcpu-blocktime will show list of blocking -time per vCPU. - .. note:: During the postcopy phase, the bandwidth limits set using ``migrate_set_speed`` is ignored (to avoid delaying requested pages that |